You should not assume you have HIV just because you have any of these symptoms. Each of these symptoms can be caused by other illnesses. And some people who have HIV do not show any symptoms at all for 10 years or more. If you think you may have been exposed to HIV, get an HIV test. Most HIV tests detect antibodies (proteins your body makes against HIV), not HIV itself.
The vessel which does not have the right-of-way has the duty to take positive and timely action to stay out of the way of the Stand-On vessel. Normally, you should not cross in front of the vessel with the right-of-way. You should slow down or change directions briefly and pass behind the other vessel.
If you see a green light/starboard side then you're probably the stand on or right of way vessel (green means go). If red/port side of the vessel is what you see then you are probably the give way or one who needs to yield (red means danger). All of that said, every situation is different and unique and all parties must act to avoid collisions at all costs, regardless of if they were the stand in or give way vessel.